脉动的

The Cholesky decomposition of cross spectral density matrix was approximated and reduced, and then the modified spectral representation method is efficient and requires less computer memory, which is suitable for simulating spatial wind fields of long span bridges.

针对现有Deodatis方法模拟大跨度桥梁空间脉动风场中存在的计算量问题，通过对谱分解矩阵引入插值近似，减少谱分解的次数，从而提高该谐波合成法的计算效率，并节省内存花费，实现了对三维空间脉动风场的有效模拟。

As the first attempt, this paper applies the laminar flamelet model to the typical diffusion combustion in diesel engines. A database of the laminar flamelet for a DI engine is built up in the phase space of the mixture fraction with the scalar dissipation rate as parameter.

以KIVA-3程序为基础，摒弃其原有的化学反应模型，模拟内燃机缸内多维湍流流场，并补充求解混合分数的时均值及其脉动均方值的湍流输运方程，得出各曲轴转角下混合分数的时均值及其脉动均方值的缸内空间分布。

The pulsate pressure in high speed flow water will influence the safety of water construction, and the eigenvalue of the pulsate pressure should be confirmed by hydraulic model testing.

高速水流中的水流脉动对水工建筑物的安全运行存在很大的影响，水流脉动压强的特征值一般需通过水工模型试验确定。

With the fund item sponsored by the National Laboratory of Hydrodynamics, the study on measurement method of propeller-induced pressure with using self-propulsion model has been carried out in depressurized towing tank.

在脉动压力的模型测试研究方面，本文在水动力学国家重点实验室基金项目的资助下，对在减压拖曳水池中利用自航模进行空泡螺旋桨诱导的脉动压力的测试方法进行了研究。

In consideration of large computational efforts of Deodatis simulation,a modified spectral representation method was proposed for simulating the fluctuating wind field of long span bridges.

针对现有Deodatis方法模拟大跨度桥梁空间脉动风场中存在的计算量问题，通过对谱分解矩阵引入插值近似，减少谱分解的次数，从而提高该谐波合成法的计算效率，并节省内存花费，实现了对三维空间脉动风场的有效模拟。

One is Bardina vorticity modification, and the other is Richardson number modification. Prediction results show that Bardina method has a superior capacity to Richardson number modification. Since DSM model has improved predictive results of the reversed velocity and tangential velocity, it is a potential method to predict strong swirling nonisotropic turbulent flow in stead of the longer convergence time.

本文采用了基于旋转体系使湍流脉动加强和削弱两种作用的修正方法对k-ε双方程的湍流耗散率方程进行修正，计算结果表明，从旋转体系可使湍流能量加强出发的Bardina涡量修正方法，预报回流区范围缩小，更加接近于试验值，其计算结果优于使湍流脉动削弱的Richardson修正。

This pulse aligns with the rhythm and movement of the small chakr as within the etheric body , the larger charkas of the regeneration system that sits just outside the etheric skin , and the larger chakr as that spin around the etheric form .

该脉动与以太体内小型脉轮的节奏和运动，以太皮肤外更大的重生系统脉轮，以太体内旋转的更大脉轮相结盟。

In view of the characteristics of the piston pump's flow ripple, of which the amplitude is large and the harmonic frequences are high, a practical and approximate method for measuring the flow ripple of hydraulic pumps has been advanced.

本文针对较大排量柱塞泵流量脉动幅值大、频宽高的特点，提出了适应于输出通道为等过流面积或近似等过流面积液压泵的流量脉动测试的实用近似方法。

According to the characteristic of wind field on bridge main deck, WAWS is utilized to simulate the fluctuating wind velocity time history. By use of the explicit decomposition of the wind velocity spectrum density matrix and the FFT technique, the efficiency of simulation is improved greatly.

根据桥梁主梁处风场特点，利用谐波合成法模拟了主梁处的脉动风速时程，通过对脉动风速谱密度矩阵的显式分解和FFT技术的引入，极大的提高了模拟效率。

Experimental results prove that this control arithmetic can decrease the current ripple with fast response based on digital hysteresis control.

实验结果表明，该文提出的电流脉动最小化算法可以减小开关周期内的电流脉动，同时保证系统的快速响应性。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失